I get gift apple pen but it

Unfortunately, if you are using the iPad (7th generation), it is not compatible with Apple Pencil (2nd generation).

Apple Pencil compatibility - Apple Support

You can maybe sell this one on a third party website / store and purchase Apple Pencil (1st generation).

OR Trade in your iPad for a iPad Pro.

Apple Trade In - Apple

Please describe your problem and tell us what iPad model you are using.

Regards

Giulio